Question

what type of paint brush do we have to use for the thin strokes

Answer 1

Answer:

Choose a pointed round brush for standard thin lines.

For lines thinner than 0.5 in (1.3 cm), a pointed round brush is your best bet. A flat brush will lead to uneven lines as you change directions with it, while a regular round brush won't give you a lot of freedom when it comes to the width of your line.